APA aipamena

(2003). The International hospitality industri. Butterworth-Heinemann.

Chicago Style aipamena

The International Hospitality Industri. Butterworth-Heinemann, 2003.

MLA aipamena

The International Hospitality Industri. Butterworth-Heinemann, 2003.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.